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MAX1809EGI from MAXIM,MAXIM - Dallas Semiconductor

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MAX1809EGI

Manufacturer: MAXIM

0.3-6V; 3A, 1MHz, DDR memory power supply. For DDR memory termination, active termination buses

Partnumber Manufacturer Quantity Availability
MAX1809EGI MAXIM 3 In Stock

Description and Introduction

0.3-6V; 3A, 1MHz, DDR memory power supply. For DDR memory termination, active termination buses The MAX1809EGI is a step-down DC-DC converter manufactured by Maxim Integrated. Below are its specifications, descriptions, and features based on factual information:

### **Specifications:**  
- **Input Voltage Range:** 4.5V to 28V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V  
- **Output Current:** Up to 3A  
- **Switching Frequency:** 300kHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 28-pin SSOP (Shrink Small Outline Package)  

### **Descriptions:**  
The MAX1809EGI is a high-efficiency, step-down DC-DC converter designed for applications requiring a regulated output voltage from a higher input supply. It integrates a synchronous rectifier for improved efficiency and supports adjustable output voltage via external resistors.  

### **Features:**  
- **Wide Input Voltage Range (4.5V to 28V)** – Suitable for various power sources.  
- **High Output Current (3A)** – Capable of driving power-hungry loads.  
- **Synchronous Rectification** – Enhances efficiency and reduces power loss.  
- **Adjustable Output Voltage (1.25V to 5.5V)** – Configurable via external resistors.  
- **Fixed-Frequency PWM Operation (300kHz)** – Ensures stable performance.  
- **Overcurrent and Thermal Protection** – Safeguards against faults.  
- **Low Dropout Operation** – Maintains regulation even when input voltage is close to output.  
- **Soft-Start Function** – Reduces inrush current during startup.  

This information is strictly based on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

0.3-6V; 3A, 1MHz, DDR memory power supply. For DDR memory termination, active termination buses

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